I
[AK4220]
AK4220
7:3 Audio Switch and 6:3 Video Switch
GENERAL DESCRIPTION
The AK4220 is an AV Switch with 7:3 Audio Switches and 6:3 Video Switches. Using CMOS process to
offer the high performance with low power consumption. In the Audio section, on-chip differential input
circuit could separate the external ground noise. The AK4220 integrates a pop noise free circuit for power
on/pff. The AK4220 is offered in a space saving 64-pin LQFP package, ideal for car navigation
applications.
FEATURES
1. Audio Section
•
Selector for 7 inputs and 3 outputs
•
Differential Input Circuit for Ground Noise Cannel
•
THD+N: -92dB (@1Vrms)
•
Dynamic Range: 96dB
•
Channel-Independent Output Off
•
Pop Noise Free Circuit for Power On/Off
•
Channel-Independent Input Detection Circuit
2. Video Section
•
Selector for 6 inputs and 3 outputs
•
Six Composite Signal Inputs
•
Video Driver for Composite Signal Output (+6dB)
•
Channel-Independent Hi-Z Output
•
On-Chip Sync-tip Clamp Circuit
•
Frequency Range: 6MHz
•
S/N: 74dB
•
Input Detection Circuit
3. Control Section
•
Serial µP I/F (I
2
C, 4-wires serial)
•
Five Programmable Output pins
4. Power Supply
•
Analog: 4.5V ~ 5.5V
•
Digital: 3.0V ~ 3.6V
•
Low Power Consumption: 186mW
5. Ta = -40
∼
85
°C
6. Package: 64pin LQFP
MS0627-E-00
-1-
2007/05
AKM [ ASAHI KASEI MICROSYSTEMS ]
